public final CachedInstanceIterable getOrCreateCachedInstance()

in entity-store/src/main/java/jetbrains/exodus/entitystore/iterate/EntityIterableBase.java [517:546]

28 lines of code
13 McCabe index (conditional complexity)


    public final CachedInstanceIterable getOrCreateCachedInstance(@NotNull PersistentStoreTransaction txn, boolean forceCount) {
        if (store == null) {
            throw new NullPointerException("Can't create cached instance for EMPTY iterable");
        }
        final EntityIterableCache cache = store.getEntityIterableCache();
        final boolean canBeCached = !cache.getCachingDisabled() && canBeCached();
        CachedInstanceIterable cached = null;
        if (canBeCached) {
            cached = txn.getCachedInstance(this);
        }
        if (cached == null || cached.getHandle().isExpired()) {
            cached = createCachedInstance(txn);
            if (canBeReordered() && !store.getConfig().isReorderingDisabled() && !cached.isSortedById()) {
                cached = cached.orderById();
            }
            if (canBeCached) {
                // if this iterable may be inconsistent and the transaction is read-only
                // then revert it in order to hold the latest cache adapter instance
                if (!getHandle().isConsistent() && txn.isReadonly()) {
                    txn.revertCaches();
                }
                txn.addCachedInstance(cached);
            } else {
                cache.setCachedCount(getHandle(), cached.size());
            }
        } else if (forceCount) {
            cache.setCachedCount(getHandle(), cached.size());
        }
        return cached;
    }